A 5.00-g bullet is fired into a 900-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 8.00 cm. What was the kinetic energy of the bullet immediately before the collision

The value is  

Explanation:

From the question we are told that

   The mass  of the bullet is

  The mass  of the wood is  

   The height attained by the combined mass is  

Generally according to the law of energy conservation    

Here is the kinetic energy of the bullet before collision.

and is the  potential  energy of the combined mass of bullet and wood at the height h which is mathematically represented as

So

=>

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

i think the answer is a and b

i wish you luck